UPDATE: Garmin UK has a page up on the product, dubbed called Garmin GB ActiveTM.
Garmin Oregon owners in the UK will soon be able to view Ordnance Survey raster maps on their units. Raster aerial imagery has been available on marine units since the release of the Garmin Colorado and Oregon 400c/i models, yet we landlubbers have had to make do with vector maps.
The OS maps, due to be released early next month, will reportedly overlay vector data on top of raster imagery, allowing for turn-by-turn navigation.
Hopefully, we'll see a similar Garmin product in the U.S. before too long, combining USGS topo maps and City Navigator highway routing, though it probably won't show up before Garmin finishes rolling out their 1:24,000 scale vector topo maps.